The Great Hubble

Students will understand the following:
1. The Hubble Space Telescope lets us see farther into space than ever before.
2. The Hubble gives us images that are thousands of years old because light travels at a finite speed across vast distances of space.
3. The Hubble could be used to search the universe for other Earthlike planets, but such exploration is expensive.
4. There are arguments for and against spending money to look for other Earthlike planets that might be thousands of light-years away.